Crushing or pulverizing machine.



G. A. DORN,'J. 0. LUDLAM dz 0. F. & L. G. BONNOT.

' GBUSHING 0R PULVERIZING MACHINE.

APPLICATION FILED AUG. 25 1908. 92 ,3 3, Patented July 20, 1909.

2 SHEETS-SHEET 1.

0. A. DORN, J 0. LUDLAM 8; G. F. & L. G. BONNOT. GRUSHING 0R PULVERIZING MACHINE.

APPLICATION FILED AUG. 25. 1908. 928,368, Patented July 20, 1909. ZSKEETS-QHEET 2 Quay-mass i i n CHARLES A. BORN, JOHN 0. LUDLAM, AND CHARLES F. BONNOT, OF CANTON, AND LOUIS O. BONNOT, OF LOUISVlLLE OHIO, ASSIGNORS TO THE BONNOT COMPANY, OF CANTON,

OHIO, A CORPORATION OF OHIO.

GR'UEHING OR PULVERIZING MACHINE.

1r ceases.

Specification of Letters Patent.

Application. filed August 25, 1998.

T 0011 whom it may concern:

Be it known that we, CHARLES A. Donn, I 01m 0. LUoLaM, and CHARLES F. Bonner, of Canton, Stark county, Ohio, and Lorne G.

, BONNOT, of Louisville, Stark county, Ohio,

have invented a new and useful Crushing or 1 i11verizing,Machine, of which the followin re erencebeing had to the accompanyingis a full, clear, and exact description,

drawin s, forming part of this speclfication,

in whic Figure l is a vertical section of the preferred form of machine embodying our invention; Fig. 2 is a similar View of the lower portion of the machine and showing the attachment for removing the grinding elements and their carrier; Fig 3 is a view partly in section and partly in end elevation of the carrier for the grinding elements; and Fig, 4.- is a top plan View of the same.

Our invention has relation to the class of crushing or pulverizing machines and is designed to, provide an improved machine of this character which will pulverize materials rapidly and economically.

The present. invention has more particular relation to the means employed for feeding the material to be crushed or pulverized into the machine and to the construction of the carrier for the grinding elements, together with means whereby said carrier with the grinding elements can be readily rcmoved from the machine.

The precise nature of our invention will be best understood by reference to the accompanying drawings in "which we have shown our preferred cnibodin'ient thereof, it being premised, however, that various changes may be made in the details of construction and arrangement without departing from the spirit and scope of our invention as defined in the appended claims.

In these drawings, the numeral 2 designates the frame of the machine, in bearings 3 of which is supported the main driving shaft 4-, having an overhung portion 5 which carries and drives the grinding elements, hereinafter dcscribed, and which extends within the grinding chamber 6. This chamher is located at the base of the machine and is provided with an internal grinding ring or track 7 {ViliGi'l. is arranged in a vertical plane, which is preferably provided with a concave inner grinding surface8.

9 designates the carrier for the grinding elements, thls carrier consistmg of 'an integral casting, the preferred form of which is shown in detail in Figs. 3 and l. It consists of abody portion formed with a series of pockets 10 to receive the grinding wheels or elements 11 and provided with the offset slotted open bearing seats 12 for the godgeons 18 of said wheels. Intermediate of the grinding wheels or elements the casing is shaped to form the scoops let, there being one of these scoops intermediate of each pair of grinding wheels or elements. These scoops are of Usliape and form pockets which extend into the body portion and have the curved side walls 15 which. diverge in the direction of the rotation of the carrier, and the angular forward wall 16, the shape and arrangement of these scoops being such as to converge the material inwardly from both sides of the grinding chamber on to the track or ring 8. 7

As will be seen from Figs. 3 and 4, the side portions 15 are flared outwardly at their rear ends, slightly beyond the ends of the open seats 12 for the gudgcons of the grind ing elez'ncnts. As before stated, this carrier is prefcrablyLcast in an. integral piece and the portions thereof which are subjected to mostwear and service, such as the seals l2 and the scoops, are preferably chilled in casting. 'lhe overhung portion 5 of the shaft 4L is provided with a square or angular portion 5 which fits within a corresponding socket in one end of the hub portion of the carrier to form the driving engagement bctween the shaft and carrier. Forward of the portion 5* the shaft is preferably tapered as shown, with the cylindrical threaded end portion 5 upon which is screwed a securing chamber and rigidly secured to the shaft 22 such as by the beve which is ournale,d in bearings 23. This shaft may be drivtpif by any suitable means,

ge'ars 24 from a shaft having a pulley 20' connected by belt 27 with the pulley 28 on the shaft 4." Secured to the hopper 21 are radial deflector blades 29 which rotate within the screening chamber and which serve to deflect the material outwardly against the screen wall 18 is a manner hereinafter described. The hopper Ql is open at its upper end and the material to be crushed or pulverized is fed through this hopper and thence downwardly into the pulverizing chamber to the action of the grind ing elements. As the material is pulverized it is thrown upwardly by the action of the rotating carrier and its scoops into the pulverizing chamber where it is caught by the deflecting blades 29 and thrown outwardly against the screen walls of the chamber where the separation is effected. The material which is too coarse to pass through the screens falls backwardly into the converging throat or hopper section which unites the screening chamber with the pulverizm chamber-and is again brought to the actlon of the grinding elements. The rotating action bf the carrier and grinding elements, act in the direction inwhich the material is to be thrown rupwardly into the screening chamber, and therefore the direction of the material does not have to be changed until it reaches the screening chamber and is caught by the deflecting blades 29. In this manner the lower portion of the grinding chamber is kept comparatively free from any accumulation of pulverizedor partially pulverized material which by its presence would tend to cushion the grinding elements and reduce the efficiency of the machine. The cone surface of the hopper 21 also acts as a deflecting surface for the material thrown upwardly into the screening chamber; and by feeding the material downspeed of the deflectors can be varied 'be desired independently of the speed of wardly through this hopper, it is not caught and thrown outwardly by the deflecting blades before reaching the grinding chamber, as would be the case if the material were fed directly through the screening chamber without the provision of this hopper. By using pulleys 26 of different diameters, the as may rotation of the rinding elements. This is an important fgature, since 'for different kinds of materials, it is advisable to rotate the deflectors at different speeds.

The material separated out by the screens is discharged through suitable passages Whichhave nothing to do with the present invention, the general construction and ar rangement of the machine herein shown and described having been fully described and claimed by us in other pending applicatrons.

termedia te hopper section.

The end wall 30 of the grinding chamber is made in a separate section so that it can be readily removed for the purpose of ob-: taining access to the chamber and to the grinding elements, the opening provided by this removable wall being of such diameter as to permit the carrier to be removed bodily therefrom in an eudwise direction and out underneath the overhung portion of the in- For the purpose of 'n'oviding for this removal, the adjacent end ,portio'n of the carrier is provided with lots 31 which may be engaged by headed bolts32 in the manner shown in Fig. 2 for the purpose of securing thereto a removing attachment. A simple and convenient form hf this attachment is shown in Fig. 2. This attachment consists of a flanged sleeve member 33 which is secured to the carrier by thebolts 32 before referred to, after the casing section 30 and securing nut 5 have been 'removed.

34 is a hollow shaft having an exterior thread and also formed at its inner end with an internal thread to engage the thread cd end portihh of the shaft 4. The shaft 3st extends through the sleeve 33 and its thread is engaged by the internal thread of a nut member 35v which has a rotary connection at 36 at the outer end of the sleeve member 33.

37 is a hand wheel which is secured to the nut fmember 35. It will be readily seen that when the hand wheel 37 is actuated, the nut member 35 will travel on the thread of the shaft 34: and will pull with it the sleeve member 33 and the carrier. In this manner the carrier may be quickly removed from the shaft and a new carrier inserted, this operation being capable of being very readily effected.

It will be notcd:.that owing to the form of the scoops-l4 the material in the lower portion of the grinding chamber will be engaged by these scoops and forced inwardly from opposite sides of the chamber toward the grinding track or ring so as to .direct the material to be pulverized on to the inner face of said track or ring directly in the path of the grinding rollers or Wheels. The latter being freely mounted in the open slots of the carrier can readily yield to any obstruction which they may encounter and are at the same time free to move outwardly by the centrifugal force of rotation toexert their grinding and pulverizing action. These scoops, as before stated, also act to throw the material upwardly into the screening chamber to the action of the deflecting blades.

Other features of the machine shown which have not been described in, detail herein, form the subject matter of other applications now pending, the present invention being more particularly concerned, as above stated, with the means for feeding the season material. into the machine and to the construction and removal. of the carrier for the grinding elements.

It will be obvious that various changes may be made in the details of construction and arrangement oi. the parts without de parting from our invention, since What we claim is:- 1. A pulverizing machine, having a rcducing chamber, a screen chamber above the reducing chamber, reducing means in the reducing chamber arranged to throw the re" duced nfiaterial directly upward into the screen chamber, an inverted cone shaped rotary feed hopper extending centrally downward within the said screen chamber and having a central discharge at its lower end,. deflecting blades secured to said hopper, and means for rotating said hopper and blades, the outer inclined surface of the hopper also forming a deflecting surface; substantially as described. i

2. [a pulverizing machine, having a reducing chamber, a screen chamber above the reducing chamber, reducing means in the reducin chamber arranged to throw the reduced material directly upward into the screen clnmibcr, an inverted cone'sliaped rotary :teed hopper extending centrally clowir ard within the said screen chamber and liavi L ,entral d". rge at its lower end, deflecting blades secured to said hopper, and means for rotating said hopper and blades, independently of the reducing means, the outer inclined sin-face of the hopper alsoforming a deflecting surface; substantially as described.

3. It rotatin carrier for the riodin rolls of a pulverizing machine. said carrier consisting of an integral casting having a plurality of bearing seats for the grinding elements, and imi ing rcarwardly inclined tlshaped scoop portions in the form of pockets extending inwardly into the body oi the carrier i erniediate said seats; substantially as des' l movable side of the casing; substantially as described.

5, In a machine of the character described, a pul'verizing chamber, a driving shafthaving an overhung portion extending into such chamber, said shaft having an angular portion and a tapered portion forward of the angular portion, a carrier for the grinding elements within said chamber on the overhung portion of the shaft and having a driving engagement with the angular portion of the shaft, and means for attaching to said arrie a removing device, said chamber having an opening in its side wall closed by a removable plate and through which opening the carrier an be removed; substantially as described.

6. In a grinding or pulverizing machine, grinding or pulverizing means, comprising a fixed circular track or ring, and a. carrier rotatably supported within said track or ring, and comprising an integral casting of general cylindrical form, having therein a plurality of radial slots or pockets formed at each side with open slots, said casting also having intermediate of said pockets, other pockets extending into said body and forming J-sliaped scoops having side walls which divergein the direction of rotation of the carrier, and grinding elements seated 1n the first named pockets and having gudgeons seated in said slots; substantially as described. i 7. A rotating carrier for the grinding rolls of a pnlverizinq' machine, comcprising a body having a. plurality of open ra ial slots to receive the gudgeons of driving rollers, and having intermediate of the said slots integral scoop portions in the form of depressions in said body, each scoop having-rearardly converging side Walls and a rearwardly inclined rear Wall, whereby the material is converged by the scoops inwardly from opposite sides toward the center and into the path of the grinding rolls, substantially as described.

in testimony whereof, we have hereunto set our hands.

(ll-li iR-LES A. DORN. JOHN t). LUDLAll/L' CHARLES F. BONNOT. LDUIS C. BONNOT.

llitnesses:

ALVIN ll. FREY, thins. KmonnAUM. 

